package com.example.project.interceptors;

import com.example.project.utils.JwtUtils;
import com.example.project.utils.ThreadLocalUtil;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import java.util.Map;

@Component
public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
       String token= request.getHeader("jwt");
       try {
           Map<String, Object> claims = JwtUtils.parseToken(token);
           //将claims放入threadlocal
           ThreadLocalUtil.set(claims);
       return  true;
       }catch (Exception o){
           //表示未登录
           response.setStatus(401);
           return false;
       }

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
           //清空Threadlocal中的数据
        ThreadLocalUtil.remove();
    }
    }